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+import FileSaver from 'file-saver'
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+
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+const Excel = require('exceljs')
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+
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+var setMerge = function (luckyMerge = {}, worksheet) {
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+ const mergearr = Object.values(luckyMerge)
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+ mergearr.forEach(function (elem) {
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+ // elem格式：{r: 0, c: 0, rs: 1, cs: 2}
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+ // 按开始行，开始列，结束行，结束列合并（相当于 K10:M12）
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+ worksheet.mergeCells(
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+ elem.r + 1,
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+ elem.c + 1,
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+ elem.r + elem.rs,
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+ elem.c + elem.cs
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+ )
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+ })
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+}
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+
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+var setBorder = function (luckyBorderInfo, worksheet) {
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+ if (!Array.isArray(luckyBorderInfo)) return
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+ // console.log('luckyBorderInfo', luckyBorderInfo)
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+ luckyBorderInfo.forEach(function (elem) {
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+ // 现在只兼容到borderType 为range的情况
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+ // console.log('ele', elem)
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+ if (elem.rangeType === 'range') {
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+ const border = borderConvert(elem.borderType, elem.style, elem.color)
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+ const rang = elem.range[0]
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+ // console.log('range', rang)
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+ const row = rang.row
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+ const column = rang.column
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+ for (let i = row[0] + 1; i < row[1] + 2; i++) {
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+ for (let y = column[0] + 1; y < column[1] + 2; y++) {
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+ worksheet.getCell(i, y).border = border
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+ }
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+ }
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+ }
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+ if (elem.rangeType === 'cell') {
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+ // col_index: 2
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+ // row_index: 1
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+ // b: {
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+ // color: '#d0d4e3'
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+ // style: 1
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+ // }
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+ const {colIndex, rowIndex} = elem.value
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+ const borderData = Object.assign({}, elem.value)
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+ delete borderData.col_index
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+ delete borderData.row_index
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+ const border = addborderToCell(borderData, rowIndex, colIndex)
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+ // console.log('bordre', border, borderData)
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+ worksheet.getCell(rowIndex + 1, colIndex + 1).border = border
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+ }
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+ // console.log(rang.column_focus + 1, rang.row_focus + 1)
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+ // worksheet.getCell(rang.row_focus + 1, rang.column_focus + 1).border = border
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+ })
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+}
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+var setStyleAndValue = function (cellArr, worksheet) {
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+ if (!Array.isArray(cellArr)) return
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+ cellArr.forEach(function (row, rowid) {
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+ row.every(function (cell, columnid) {
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+ if (!cell) return true
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+ const fill = fillConvert(cell.bg)
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+
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+ const font = fontConvert(
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+ cell.ff,
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+ cell.fc,
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+ cell.bl,
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+ cell.it,
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+ cell.fs,
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+ cell.cl,
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+ cell.ul
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+ )
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+ const alignment = alignmentConvert(cell.vt, cell.ht, cell.tb, cell.tr)
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+ let value = ''
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+
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+ if (cell.f) {
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+ value = {formula: cell.f, result: cell.v}
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+ } else if (!cell.v && cell.ct && cell.ct.s) {
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+ // xls转为xlsx之后，内部存在不同的格式，都会进到富文本里，即值不存在与cell.v，而是存在于cell.ct.s之后
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+ // value = cell.ct.s[0].v
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+ cell.ct.s.forEach(arr => {
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+ value += arr.v
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+ })
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+ } else {
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+ value = cell.v
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+ }
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+ // style 填入到_value中可以实现填充色
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+ const letter = createCellPos(columnid)
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+ const target = worksheet.getCell(letter + (rowid + 1))
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+ // console.log('1233', letter + (rowid + 1))
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+ for (const key in fill) {
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+ target.fill = fill
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+ console.log(key)
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+ break
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+ }
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+ target.font = font
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+ target.alignment = alignment
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+ target.value = value
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+
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+ return true
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+ })
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+ })
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+}
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+
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+var setImages = function (imagesArr, worksheet, workbook) {
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+ if (typeof imagesArr !== 'object') return
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+ for (const key in imagesArr) {
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+ // console.log(imagesArr[key]);
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+ // 通过 base64 将图像添加到工作簿
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+ const myBase64Image = imagesArr[key].src
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+ // 开始行 开始列 结束行 结束列
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+ const start = {col: imagesArr[key].fromCol, row: imagesArr[key].fromRow}
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+ const end = {col: imagesArr[key].toCol, row: imagesArr[key].toRow}
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+ const imageId = workbook.addImage({
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+ base64: myBase64Image,
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+ extension: 'png'
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+ })
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+ worksheet.addImage(imageId, {
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+ tl: start,
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+ br: end,
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+ editAs: 'oneCell'
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+ })
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+ }
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+}
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+
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+var fillConvert = function (bg) {
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+ if (!bg) {
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+ return {}
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+ }
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+ // const bgc = bg.replace('#', '')
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+ const fill = {
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+ type: 'pattern',
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+ pattern: 'solid',
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+ fgColor: {argb: bg.replace('#', '')}
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+ }
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+ return fill
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+}
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+
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+var fontConvert = function (
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+ ff = 0,
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+ fc = '#000000',
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+ bl = 0,
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+ it = 0,
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+ fs = 10,
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+ cl = 0,
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+ ul = 0
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+) {
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+ // luckysheet：ff(样式), fc(颜色), bl(粗体), it(斜体), fs(大小), cl(删除线), ul(下划线)
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+ const luckyToExcel = {
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+ 0: '微软雅黑',
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+ 1: '宋体（Song）',
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+ 2: '黑体（ST Heiti）',
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+ 3: '楷体（ST Kaiti）',
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+ 4: '仿宋（ST FangSong）',
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+ 5: '新宋体（ST Song）',
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+ 6: '华文新魏',
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+ 7: '华文行楷',
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+ 8: '华文隶书',
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+ 9: 'Arial',
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+ 10: 'Times New Roman ',
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+ 11: 'Tahoma ',
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+ 12: 'Verdana',
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+ num2bl: function (num) {
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+ return num !== 0
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+ }
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+ }
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+ // 出现Bug，导入的时候ff为luckyToExcel的val
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+
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+ const font = {
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+ name: typeof ff === 'number' ? luckyToExcel[ff] : ff,
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+ family: 1,
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+ size: fs,
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+ color: {argb: fc.replace('#', '')},
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+ bold: luckyToExcel.num2bl(bl),
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+ italic: luckyToExcel.num2bl(it),
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+ underline: luckyToExcel.num2bl(ul),
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+ strike: luckyToExcel.num2bl(cl)
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+ }
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+
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+ return font
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+}
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+
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+var alignmentConvert = function (
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+ vt = 'default',
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+ ht = 'default',
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+ tb = 'default',
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+ tr = 'default'
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+) {
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+ // luckysheet:vt(垂直), ht(水平), tb(换行), tr(旋转)
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+ const luckyToExcel = {
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+ vertical: {
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+ 0: 'middle',
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+ 1: 'top',
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+ 2: 'bottom',
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+ default: 'top'
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+ },
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+ horizontal: {
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+ 0: 'center',
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+ 1: 'left',
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+ 2: 'right',
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+ default: 'left'
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+ },
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+ wrapText: {
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+ 0: false,
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+ 1: false,
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+ 2: true,
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+ default: false
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+ },
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+ textRotation: {
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+ 0: 0,
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+ 1: 45,
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+ 2: -45,
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+ 3: 'vertical',
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+ 4: 90,
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+ 5: -90,
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+ default: 0
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+ }
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+ }
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+
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+ const alignment = {
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+ vertical: luckyToExcel.vertical[vt],
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+ horizontal: luckyToExcel.horizontal[ht],
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+ wrapText: luckyToExcel.wrapText[tb],
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+ textRotation: luckyToExcel.textRotation[tr]
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+ }
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+ return alignment
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+}
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+
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+var borderConvert = function (borderType, style = 1, color = '#000') {
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+ // 对应luckysheet的config中borderinfo的的参数
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+ if (!borderType) {
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+ return {}
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+ }
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+ const luckyToExcel = {
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+ type: {
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+ 'border-all': 'all',
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+ 'border-top': 'top',
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+ 'border-right': 'right',
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+ 'border-bottom': 'bottom',
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+ 'border-left': 'left'
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+ },
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+ style: {
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+ 0: 'none',
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+ 1: 'thin',
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+ 2: 'hair',
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+ 3: 'dotted',
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+ 4: 'dashDot', // 'Dashed',
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+ 5: 'dashDot',
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+ 6: 'dashDotDot',
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+ 7: 'double',
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+ 8: 'medium',
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+ 9: 'mediumDashed',
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+ 10: 'mediumDashDot',
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+ 11: 'mediumDashDotDot',
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+ 12: 'slantDashDot',
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+ 13: 'thick'
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+ }
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+ }
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+ const template = {
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+ style: luckyToExcel.style[style],
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+ color: {argb: color.replace('#', '')}
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+ }
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+ const border = {}
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+ if (luckyToExcel.type[borderType] === 'all') {
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+ border['top'] = template
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+ border['right'] = template
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+ border['bottom'] = template
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+ border['left'] = template
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+ } else {
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+ border[luckyToExcel.type[borderType]] = template
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+ }
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+ // console.log('border', border)
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+ return border
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+}
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+
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+function addborderToCell(borders, rowIndex, colIndex) {
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+ const border = {}
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+ const luckyExcel = {
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+ type: {
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+ l: 'left',
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+ r: 'right',
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+ b: 'bottom',
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+ t: 'top'
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+ },
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+ style: {
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+ 0: 'none',
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+ 1: 'thin',
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+ 2: 'hair',
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+ 3: 'dotted',
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+ 4: 'dashDot', // 'Dashed',
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+ 5: 'dashDot',
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+ 6: 'dashDotDot',
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+ 7: 'double',
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+ 8: 'medium',
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+ 9: 'mediumDashed',
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+ 10: 'mediumDashDot',
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+ 11: 'mediumDashDotDot',
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+ 12: 'slantDashDot',
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+ 13: 'thick'
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+ }
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+ }
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+ // console.log('borders', borders)
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+ for (const bor in borders) {
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+ // console.log(bor)
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+ if (borders[bor].color.indexOf('rgb') === -1) {
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+ border[luckyExcel.type[bor]] = {
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+ style: luckyExcel.style[borders[bor].style],
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+ color: {argb: borders[bor].color.replace('#', '')}
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+ }
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+ } else {
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+ border[luckyExcel.type[bor]] = {
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+ style: luckyExcel.style[borders[bor].style],
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+ color: {argb: borders[bor].color}
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+ }
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+ }
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+ }
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+
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+ return border
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+}
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+
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+function createCellPos(n) {
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+ const ordA = 'A'.charCodeAt(0)
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+
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+ const ordZ = 'Z'.charCodeAt(0)
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+ const len = ordZ - ordA + 1
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+ let s = ''
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+ while (n >= 0) {
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+ s = String.fromCharCode((n % len) + ordA) + s
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+
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+ n = Math.floor(n / len) - 1
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+ }
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+ return s
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+}
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+
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+export var exportExcel = function (luckysheet, value) {
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+ // 1.创建工作簿，可以为工作簿添加属性
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+ const workbook = new Excel.Workbook()
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+ // 2.创建表格，第二个参数可以配置创建什么样的工作表
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+ luckysheet.forEach(function (table) {
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+ if (table.data.length === 0) return true
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+ const worksheet = workbook.addWorksheet(table.name)
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+ const merge = (table.config && table.config.merge) || {}
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+ const borderInfo = (table.config && table.config.borderInfo) || {}
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+ // 3.设置单元格合并,设置单元格边框,设置单元格样式,设置值,导出图片
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+ setStyleAndValue(table.data, worksheet)
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+ setMerge(merge, worksheet)
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+ setBorder(borderInfo, worksheet)
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+ setImages(table.images, worksheet, workbook)
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+ return true
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+ })
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+
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+ // 4.写入 buffer
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+ const buffer = workbook.xlsx.writeBuffer().then(data => {
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+ const blob = new Blob([data], {
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+ type: 'application/vnd.ms-excel;charset=utf-8'
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+ })
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+ console.log('导出成功！')
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+ FileSaver.saveAs(blob, `${value}.xlsx`)
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+ })
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+ return buffer
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+}
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